The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 20, 1994
Filed:
Dec. 27, 1993
Koji Takata, Itami, JP;
Masato Yoshino, Itami, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
A brake fluid pressure control device has a wheel brake fluid pressure control valve having a discharge valve and provided in a main fluid passage extending from a master cylinder to wheel brakes. A discharged fluid reservoir is provided to temporarily store the brake fluid discharged from the discharge valve. A pump is provided to pump the brake fluid out of the discharged fluid reservoir and return it to the main fluid passage. A fluid supply passage branches from the main fluid passage at a point upstream of a flow return point from the pump and extends to the discharged fluid reservoir. A traction control changeover valve is provided to checking a fluid flow from the flow return point toward the master cylinder during traction control. A shutoff valve is provided to check a fluid flow from the fluid supply passage to the discharged fluid reservoir while the pressure in the master cylinder is being applied. The shutoff valve is a stroke responsive type check valve for checking a fluid flow from the fluid supply passage toward the discharged fluid reservoir if the amount of the brake fluid in the discharged fluid reservoir exceeds a predetermined level.